HighCVE-2026-113823

    aznfs: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CVE-2026-113823)

    Published Sources: BSI

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    What is affected, what to do

    Improper limitation of a pathname to a restricted directory ('path traversal') in Azure CycleCloud allows an unauthorized attacker to disclose information over a network.

    Update Microsoft Azure CycleCloud 8.9.2 to version 8.10.1.

    Affected
    • Microsoft Azure CycleCloud 8.9.2 lt 8.9.2..8.10.1
    Fixed in
    • Microsoft Azure CycleCloud 8.9.2 8.10.1

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

    7.5

    XIEM Effective CVSS

    Highest available CVSS rating from NVD and vendor data.

    Source: NVD, CVSS v3

    7.5

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: BSI

    1.3 %

    EPSS score

    Moderate — model estimates 1-10% exploitation likelihood.

    Source: FIRST EPSS, percentile 71.1

    Show all metrics
    Severity
    High
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

    Read in glossary
    88.26 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

    Read in glossary
    no public PoC known
    XIEM Effective CVSS

    XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.

    Read in glossary
    7.5 Methodology
    CVSS v3

    CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.

    Read in glossary
    7.5
    EPSS score

    The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.

    Read in glossary
    1.3 %
    Moderate — model estimates 1-10% exploitation likelihood.
    EPSS percentile

    The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.

    Read in glossary
    71.1
    High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary
    —
    Published
    CISA assessment (SSVC)
    Exploitation: none known · automatable · Technical impact: partial
    Source: CISA Vulnrichment, as of 10 November 2026
    CWE

    CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.

    Read in glossary
    CWE-22

    Detection rules

    No NEOSEC detection rule is available for this vulnerability yet.

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

    Read in glossary
    High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    Improper limitation of a pathname to a restricted directory ('path traversal') in Azure CycleCloud allows an unauthorized attacker to disclose information over a network.

    Source: BSI WID Portal

    Affected products

    The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

    Affected products
    Affected versionsFixed in
    Microsoft@azure/msal-node
    • 1.0.0.0 – < 7.0.1
    • 7.0.1
    Microsoftaznfs
    • 1.0.0.0 – < 3.0.20
    • 3.0.20
    MicrosoftAzure Confidential Clean Room
    • 1.0.0 – < 11.0.0
    • 11.0.0
    MicrosoftAzure CycleCloud 8.9.1
    • 1.0.0 – < 8.10.1
    • 1.0.0 – < 8.10.1-3968
    • 8.10.1
    • 8.10.1-3968
    MicrosoftAzure CycleCloud 8.9.2
    • 8.9.2 – < 8.10.1
    • 8.10.1
    MicrosoftAzure File Sync
    • 23.1.0.0 – < 23.2
    • 23.2
    MicrosoftAzure File Sync v22
    • 1.0.0.0 – < 23.2
    • 23.2
    MicrosoftAzure Front Door
    • ≥ 1.0.0
    • —
    MicrosoftAzure Local
    • 1.0.0 – < 1.2610.2.3134
    • 1.2610.2.3134
    MicrosoftAzure Machine Learning
    • 3.0.0 – < 2.45.1
    • 2.45.1
    MicrosoftAzure Managed Grafana
    • ≥ 1.0.0.0
    • —
    MicrosoftAzure Open AI
    • ≥ 1.0.0
    • —
    MicrosoftAzure Privileged Identity Management (PIM)
    • 1.0.0 – < 2.0.32.2053
    • 2.0.32.2053
    MicrosoftAzure Virtual Machines
    • < 2610
    • 2610
    MicrosoftAzure Web Apps
    • 1.0.0 – < 2.10.0
    • 2.10.0
    Microsoftkernel-mshv-6.6.137.mshv2-2.azl3.x86_64
    • ≥ 1.0.0
    • —
    MicrosoftMicrosoft Authentication Library for JavaScript
    • 1.0.0 – < 5.21.0
    • 5.21.0
    MicrosoftMicrosoft Entra Private Network Connector
    • 1.5.4892.0 – < 1.5.5130.0
    • 1.5.5130.0
    MicrosoftMicrosoft HPC Pack 2016
    • ≥ 1.0.0
    • —
    MicrosoftMicrosoft HPC Pack 2019
    • 1.0.0 – < 6.3.8364
    • 6.3.8364
    MicrosoftPowerShell 7.6
    • 7.6.0 – < 7.6.10
    • 7.6.10
    MicrosoftPowerShell 7.7
    • 1.0.0 – < 7.7.0
    • 7.7.0
    MicrosoftAzure
    • Confidential Clean Room
    • CycleCloud 8.9.1
    • CycleCloud 8.9.2
    • File Sync v21
    • File Sync v23
    • Front Door
    • Machine Learning
    • Managed Grafana
    • msal-node
    • Open AI
    • Privileged Identity Management (PIM)
    • Virtual Machines
    • Web Apps
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    MicrosoftAzure Linux
    • 3
    • —
    MicrosoftPowerShell
    • 7.7
    • —
    From bundled advisories, not CVE-specific (8)

    Product list of a bundled advisory that does not state which product this CVE affects.

    Products from bundled advisories
    Affected versionsFixed in
    Microsoft.NET
    • 10
    • 11
    • 8
    • 9
    • —
    • —
    • —
    • —
    Microsoft365 Apps
    • Agents SDK
    • —
    MicrosoftAzure
    • DevOps
    • Pipelines
    • —
    • —
    MicrosoftPowerShell
    • 7.6
    • —

    Vendors and products

    Affected operating systems

    Affected operating systems
    LinuxLinux—
    WindowsWindows—

    Weakness classes (CWE)

    • CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

      Base

      The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

      Entry at MITRE CWE-22

    References & sources

    Changes to this CVE

    Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

    1. Record modifiedCISA ADP

      CISA assessment (SSVC): exploitation: none known, automatable: yes

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      SSVC assessmentadded
      —
      {"id":"CVE-2026-113823","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"version":"2.0.3","timestamp":"2026-11-10T20:08:05.979808Z"}

      Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

    2. ReceivedMicrosoft

      CVSS V3.1: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

      Weakness type: CWE-22

      Description added or changed

      Show 5 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Descriptionadded
      —
      Improper limitation of a pathname to a restricted directory ('path traversal') in Azure CycleCloud allows an unauthorized attacker to disclose information over a network.
      CVSSadded
      —
      AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
      Weakness type (CWE)added
      —
      CWE-22
      Affected versions (publisher)added
      —
      New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/113xxx/CVE-2026-113823.json">CVE-2026-113823</a>
      Referenceadded
      —
      https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-113823

      Source identifier: secure@microsoft.com

    Linked CVEs

    Linked CVEs
    MediumCVE-2026-122987Microsoft High Performance Computing (HPC) Pack Elevation of Privilege Vulnerability5.9—
    HighCVE-2026-122986Microsoft Azure Kubernetes Service Elevation of Privilege Vulnerability7.8—
    MediumCVE-2026-122985Microsoft PowerShell Information Disclosure Vulnerability6.1—
    MediumCVE-2026-121675PowerShell Information Disclosure Vulnerability6.1—
    MediumCVE-2026-121674PowerShell Information Disclosure Vulnerability6.1—
    MediumCVE-2026-121669PowerShell Information Disclosure Vulnerability6.1—
    HighCVE-2026-121668Azure Confidential Clean Rooms Tampering Vulnerability7.7—
    CriticalCVE-2026-119990Azure OpenAI Elevation of Privilege Vulnerability9.8—
    HighCVE-2026-119989Azure Pipelines Remote Code Execution Vulnerability8.2—
    HighCVE-2026-118742Azure Front Door Elevation of Privilege Vulnerability8.6—
    HighCVE-2026-118288Microsoft Azure File Sync Elevation of Privilege Vulnerability7.0—
    CriticalCVE-2026-114162Microsoft Graph Elevation of Privilege Vulnerability9.1—
    HighCVE-2026-114161Azure CycleCloud Elevation of Privilege Vulnerability7.8—
    CriticalCVE-2026-114160Azure Managed Grafana Elevation of Privilege Vulnerability9.8—
    HighCVE-2026-113823Azure CycleCloud Information Disclosure Vulnerability7.5—
    MediumCVE-2026-113822Azure CycleCloud Elevation of Privilege Vulnerability6.5—
    MediumCVE-2026-109462Azure Firmware Security Feature Bypass Vulnerability4.4—
    MediumCVE-2026-109460Microsoft Entra Private Network Connector Information Disclosure Vulnerability5.5—
    HighCVE-2026-109457Azure CLI Remote Code Execution Vulnerability8.0—
    MediumCVE-2026-108470Microsoft Authentication Library (MSAL) for Node.js Information Disclosure Vulnerability6.5—
    MediumCVE-2026-108469Microsoft Authentication Library for JavaScript Spoofing Vulnerability6.8—
    HighCVE-2026-105734Azure Local Elevation of Privilege Vulnerability7.0—
    HighCVE-2026-105494Azure NFS mount helper (aznfs) Elevation of Privilege Vulnerability7.8—
    HighCVE-2026-102224Azure CycleCloud Elevation of Privilege Vulnerability8.4—

    Linked advisories

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    Badge preview for CVE-2026-113823
    <a href="https://intel.neosec.eu/en/cve/CVE-2026-113823"><img src="https://intel.neosec.eu/badge/cve/CVE-2026-113823.svg?lang=en" alt="CVE-2026-113823 – NEOSEC Intel" height="20"></a>